Using CodePen's Professor Mode (and a trusty whiteboard from time to time) Gregor walked the class through creating a great group of different experiments, all the while encouraging creativity and exploration in code.
The workshop began with a simple grid of squares, which was a great layout for people to start getting creative with colors and animations!
They then progressed into creating fractals!
And ended impressively with a CSS-made Penrose triangle!
Gregor said he welcomes the idea of taking the workshop on the road, so if you're looking for someone to add a little artistic flair to your conference, you can reach him on Twitter!